Interpretation: The removal of heat energy from body on evaporation of alcohol from the person’s skin is to be explained.
Concept introduction: Reactions in which heat is absorbed are called endothermic reactions. We know that evaporation of alcohol is an endothermic process.
Answer to Problem 55A
The alcohol is a volatile liquid with weak intermolecular forces and a high vapor pressure. Particles of liquid are always moving and keep on evaporating in an open system.
Explanation of Solution
When a person has a severe fever and we have an alcoholic rub on a person’s body, the warm body provides heat energy and the particles of alcohol gain energy from the body and evaporates causing the person’s body to feel cool. In this way, evaporation of alcohol removes heat energy from the person’s body.
This is to conclude on the basis of property of liquid in an endothermic process.
Chapter 14 Solutions
World of Chemistry, 3rd edition
- SH 0 iq noitzouDarrow_forwardNonearrow_forward+ HCl →? Draw the molecule on the canvas by choosing buttons from the Tools (for bonas), Atoms and Advanced Template toolbars. The single bond is active by default. + M C + H± 2D EXP. CONT. K ? L 1 H₁₂C [1] A HCN O S CH3 CH 3 CI Br HC H₂ CH CH CH3 - P Farrow_forward
- SHarrow_forwardSH 0arrow_forward2. Please consider the two all 'cis' isomers of trimethylcyclohexane drawn below. Draw the two chair conformers of each stereoisomer below (1 and 2) and calculate their torsional interaction energies in order to identify the lower energy conformer for each stereoisomer. Based on your calculations, state which of the two stereoisomers 1 and 2 is less stable and which is more stable. [1,3-diaxial CH3 CH3 = 3.7kcal/mol; 1,3-diaxial CH3 H = 0.88kcal/mol; cis-1,2 (axial:equatorial) CH3 CH3 = 0.88kcal/mol; trans-1,2-diequatorial CH3 CH3 = 0.88kcal/mol) all-cis-1,2,3- 1 all-cis-1,2,4- 2arrow_forward
- Nonearrow_forwardWhat is the mechanism by which the 1,4 product is created? Please draw it by hand with arrows and stuff.arrow_forwardWhat is the relationship between A and B? H3C A Br Cl H3C B Br relationship (check all that apply) O same molecule O enantiomer O diastereomer structural isomer O stereoisomer isomer O need more information to decide O same molecule ☐ enantiomer Br Br Br CH3 Br CI CH3 O diastereomer ☐ structural isomer ☐ stereoisomer isomer O need more information to decide O same molecule O enantiomer Odiastereomer structural isomer O stereoisomer ☐ isomer O need more information to decidearrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY